I have a 2.5" catback exhaust for my Mitsuibishi Eclipse RS. I am unsure what size testpipe I should buy. Is the 2.5 straightpipe going to allow too much free airflow for my 4 cylinder non turbo Eclipse? Will the 2.25 straightpipe be quieter than the 2.5?
#32007, "RE: Is my exhaust too good?" In response to Reply # 1
for non turbos, you need backpressure, to produce torque, when you got that nice exhaust, you eliminate back pressure, slap a turbo on there and it'll be able to breathe in and out really well and be able to FLY
turbo8u: "jiggle jiggle then vroom vroom pshhhh" -Mike Pruett 2gnt member# 976 MOPAR Stage 2 SRTForums.com member #37 (Yeah, I signed up when it first came out, and ended up getting one, cool huh?) "The object of war is not to die for your country but to make the other bastard die for his." - General George Patton (1885-1945)
#32010, "RE: Is my exhaust too good?" In response to Reply # 4
my NT with a full catback Apexi N1 and Greddy header definitly lost some low end and gained a little bit in the top end...It's a little bit faster than before but i was dissapointed with the gains....When i had my older turbo, after installing a highflow exhaust and downpipe, there was a huge boost in power....Id say in NT trim, catbacks arent really worth it.
1997 Eclipse GS AEM CAI Apex'i N1 Catback Greddy Header 5% window tint Front-Rear-Lower Rear STB's Yellow Painted Calipers 1st gen altezzas with original painted center piece Soon-Tokico Illum's or Blues
#32012, "RE: Is my exhaust too good?" In response to Reply # 6
The same reason why people take them off or guy them.
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#32013, "RE: Is my exhaust too good?" In response to Reply # 6
>Why don't race cars use a catalytic converter?
Race cars don't have them because their engines are built totally different. They are built to use the least restrictive intake and exhaust possible. The engines would run even better on those cars if they could just be released to the engine bay, but we all know that isn't a realistic possibility.
'98 Talon Esi
Mods: System:Alpine CD Deck w/ 6d Changer|2 10" C2 Precision Power Subs|Fosgate 360a2 Amp Engine:helmut.idlegames.com/sounds/tal_cdb.mp3|Bosch Platinum +4 Plugs|K&N Drop-in Air Cleaner Suspension:Upper Front & Rear Strut Bars Exterior:15% Tint All Around
Next Purchases: Symborski Shifter Kit Short Shifter
#32015, "RE: Is my exhaust too good?" In response to Reply # 9
How often is a racecar at 1000-3000 rpm's?
You definately notice a loss of torque. To be honest my car is more fun to drive around town with the stock intake on because it has so much torque and just feels "zippy" around town.
------------------------------------------------ 98 ESi 95 GS
#32016, "RE: Is my exhaust too good?" In response to Reply # 10
>How often is a racecar at 1000-3000 rpm's? > >You definately notice a loss of torque. To be honest my car >is more fun to drive around town with the stock intake on >because it has so much torque and just feels "zippy" around >town.
stock intake and exhaust OWNZ JOO!! around town that is
#32017, "RE: Is my exhaust too good?" In response to Reply # 11
i've been experimenting with different exhaust and intake setups...from what i have seen the loss is torque from having a catback is minimal...i can deffinatly tell there is more power with the catback on...and the top end is very very nice...
#32018, "RE: Is my exhaust too good?" In response to Reply # 12
I have the Apex n1 cat-back exhaust also but mines for a GS. I'm going to buy a turbo kit soon . What will happen to the back pressure that I have now will it be to much that I will have to buy a cat-back exhaust for a gs-t or will it just be fine?
99 GS OZ EDITION MODS- Apexi N1 Catback Progress Sport Springs Audio- JVC CD/TAPE/MP3 Player Pioneer XM Radio 2 Alpine type R 12s MTX-775 Watt Amp
Future Mods- Hahns Stage 2 Turbo Kit 17in Rims JSP Carbon Fiber Blade or Arospeed Carbon Fiber ST wing Carbon Fiber Vented Hood Sparco Racing Seats AEM Big Brake Kit Final Drive Mod Tansco Shift Kit Bottom End Kit More to come......
99 GS OZ EDITION MODS- Hahns Stage 2 Turbo Kit Apexi N1 Catback Testpipe Progress Sport Springs Audio- Sony LCD entertainment stereo Pioneer XM Radio 2 Alpine type R 12s MTX-775 Watt Amp
#32019, "RE: Is my exhaust too good?" In response to Reply # 9
just my .02 (drag cars dont use cats or mufflers because there using methanol + gas, or racing fuel as most people call it. using this in your cat'd car, the exhaust would melt that honeycomb inside of your cat or muff. and suddenly block it, and everyone knows, with no exit for exhaust to go what happens......boooooom.
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